Research Article
Water Quality Analysis for the Depletion of Dissolved Oxygen due to Exponentially Increasing Form of Pollution Sources
Table 1
Variable and parameter values.
(a) |
| | Variables |
| | is the time (day) | | is the position (m) | | is the pollutant concentration (kg m-3) | | is the dissolved oxygen concentration (kg m-3) |
|
|
(b) |
| | Parameters | SI units |
| | is the length of the river (km) | 325 | | is the dispersion coefficient of pollutant in the -direction (m2 day-1) | 3,456,000 | | is the dispersion coefficient of dissolved oxygen in the -direction (m2 day-1) | 3,456,000 | | is the water velocity in the -direction (m day-1) | 43,200 | | is the cross-section area of the river (m2) | 2100 | | is the rate of pollutant addition along the river (kg m-1 day-1) | 0.06 | | is the degradation rate coefficient at 20° for pollutant (day-1) | 8.27 | | is the reaeration rate coefficient at 20° for dissolved oxygen (day-1) | 44.10 | | is the half-saturated oxygen demand concentration for pollutant decay (kg m-1) | 0.007 | | is the mass transfer of oxygen from air to water (m2 day-1) | 16.50 | | is the saturated oxygen concentration (mg L-1) | 0.01 |
|
|
[14]; [ 10]; based on the molecular weights in the chemical reaction ; estimated. |
